Improvement in registers



G. 0. SMITH.

Register.

No. 210,159. Patented Nov. 19, 187 8.

Emerita:

witnesses, M M W N.FETERS, FHOTOJJTHOGRAPHER, WASMNGWN, 0. C.

UNITED STATES PATENT ()FFICE.

GEORGE 0. SMITH, OF BALTIMORE, MARYLAND.

IMPROVEMENT lN REGISTERS.

Specification forming part of Letters Patent No. 210,159, dated November19, 1878; application liled April 2, 1878.

To all whom it may concern:

Beit known that I, GEO. 0. SMITH, of the city of Baltimore, State ofMaryland, have invented certain new and useful Improvements inRegisters; and I hereby declare the same to be fully, clearly, andexactly described as follows, reference being had to the accompanyingdrawings, in which Figure l is a plan view of the device; Fig. 2, asimilar view, the dials and cover-plate being removed; and Fig. 3, avertical sectional view through one of the dial-pivots.

\Vhile my present improvement is applicable to any registering devicehaving revolving dials or arbors, it is especially adapted to theregister described in. Letters Patent granted to me March 12, 1878, No.201,295.

In order that the present invention may be readily understood withoutnecessarily referring to said Letters Patent, the construction of theregister therein described will be here briefly set forth.

A large unit-wheel bearing numerals upon its face is actuated by meansofa lever, ratchet, and pawl. The said wheel is furnished with a numberof pins corresponding to the numerals upon its face, one of which pins,at each registration, aetnates a gong-hannner. A single pin upon theopposite side of the unitavheel engages at each complete revolution witha tens-wheel, and moves it through a single cog-space. Other wheels,representing hundreds, thousands, tens of thousands, 8a)., are similarlygeared in a train, the entire mechanism being suitably mountedinacaseadapted to be locked or sealed.

The present invention is designed to furnish means for preventing thefraudulent alteration of the indication of the register, even should theouter casing be removed. To this end each arbor is furnished with alocking mechanism out of the reach of any tool or implement, and whichautomatically releases the arbor at the instant of registration, andimmediately thereafter again secures it.

In the accompanying drawings, A represents the main plate of theregister, upon which the various wheels are mounted. But two dials areillustrated in the drawings, which, in fact, illustrate only so much ofa register as is necessary to make my present invention understood. Thedials a are mounted upon arbors F, which turn upon tubular bearin gs E,attached to the plate A. Felt or leather washers O are held against thedial-faces by means of disks 0, through which pass rivets D to the rearof the plate A. Springs (1 being slipped over the ends of the rivets andsecured by the pins (3, the parts are held together with a yieldingpressure.

In Fig. 2 is illustrated in detail the locking mechanismt-he arbor onthe right of the ii ure being represented in section on line no m, thaton the left in section on line y 3 of Fig. 3. The arbor of each dial orwheel in the train is provided with a cam, f, and a series ot teeth, f,the latter being equal in number to the numerals on its face--in thiscase ten.

Pivoted to the main plate A, between each pair of arbors, is a lever, G,having at one end a single lug, which enters successively theinterstices between the teeth f, and engaging at the other with a cam,f,as shown.

The operation of the mechanism is as follows: At each completerevolution of a dial, and just as its pin a is about to engage with thecog a of the next, the cam f upon the end of the arbor of the first dialdepresses the end of the lever G, releasing the lug g at the oppositeend from engagement with the toothed arbor of the next wheel, which isthen free to be, and is, rotated through a single cog-space. Immediatelythereafter the lever is released, and its lug again falls intoengagement with the toothed arbor, where it is retained by the spring guntil the next complete revolution of the first dial.

It will be observed that the cover-plate I3 is perforated for theadmission of the various arbors, and the wheels fit snugly against it,rendering it impossible to insert any instrument between the arbor andplate.

The cover 13 is soldered to the main plate A, obviating the possibilityof fraudulent undetected access to the registering mechanism, and as thesame is effectually locked, the al teration of its indications, exceptby and in the manner of the legitimate and intended use of the device,is out of the question.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

' dices thereof, having their arbors situated within'a sealed case, eachdial actuating at each complete revolution the next dial in the train,

and at the same time releasing a locking mechanism, the said dials beingexterior to the sealed case, and constituting cover-plates for thearbor-orifices, substantially as described.

3. In combination with the main plate, haw ing tubular shaft, the dialsa, bolt D, and looking mechanism, substantially as described.

4. In combination with the arbors F F, having, respectively, a series ofteeth andacam, the lever G, having lug g and spring 9, and the plate B,substantially as described.

5. In combination with the plate A, having shaft E, and wheel to, havingarbor F, the plate B, substantially as described.

' GEO. 0. SMITH.

Witnesses S. D. WILLIAMS, DAVID G. WEEMS.

